authorgravatar for jacobly@ziglang.orgJacob Young <jacobly@ziglang.org> 2023-03-18 23:10:44-04:00
committergravatar for kubkon@jakubkonka.comJakub Konka <kubkon@jakubkonka.com> 2023-03-21 08:49:54+01:00
log80427796df5f8eb23ac7ca8ee03ac572b737757f
treed29cb1a6945d359ad427abd4f8157529db180625
parent53ec2a955eb02dc829af8610f17af42717d512fb

x86_64: implement @returnAddress and @frameAddress

2 files changed, 9 insertions(+), 3 deletions(-)

src/arch/x86_64/CodeGen.zig+9-2
......@@ -4119,12 +4119,19 @@ fn airBreakpoint(self: *Self) !void {
41194119}
41204120
41214121fn airRetAddr(self: *Self, inst: Air.Inst.Index) !void {
4122 const result: MCValue = if (self.liveness.isUnused(inst)) .dead else return self.fail("TODO implement airRetAddr for x86_64", .{});
4122 const result: MCValue = if (self.liveness.isUnused(inst))
4123 .dead
4124 else
4125 .{ .stack_offset = -@as(i32, @divExact(self.target.cpu.arch.ptrBitWidth(), 8)) };
41234126 return self.finishAir(inst, result, .{ .none, .none, .none });
41244127}
41254128
41264129fn airFrameAddress(self: *Self, inst: Air.Inst.Index) !void {
4127 const result: MCValue = if (self.liveness.isUnused(inst)) .dead else return self.fail("TODO implement airFrameAddress for x86_64", .{});
4130 const result = if (self.liveness.isUnused(inst)) .dead else result: {
4131 const dst_mcv = try self.allocRegOrMem(inst, true);
4132 try self.genBinOpMir(.mov, Type.usize, dst_mcv, .{ .register = .rbp });
4133 break :result dst_mcv;
4134 };
41284135 return self.finishAir(inst, result, .{ .none, .none, .none });
41294136}
41304137
test/behavior/return_address.zig-1
......@@ -7,7 +7,6 @@ fn retAddr() usize {
77
88test "return address" {
99 if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
10 if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
1110 if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
1211 if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
1312 if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO